Late Pleistocene and Holocene vegetation and climate on the northern Taymyr Peninsula, Arctic Russia |
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Authors: | ANDREI A ANDREEV PAVEL E TARASOV CHRISTINE SIEGERT TOBIAS EBEL VLADIMIR A KLIMANOV MARTIN MELLES ANATOLY A BOBROV ALEXANDR YU DEREVIAGIN DAVID J LUBINSKI HANS-WOLFGANG HUBBERTEN |
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Institution: |
a Alfred Wegener Institute for Polar and Marine Research Research Unit Potsdam Telegrafenberg A43 D-14473 Potsdam Germany.
b Geography Department of Moscow State University, Vorobievy Gory 119899 Moscow Russia.
c Institute of Geography RAS Staromonetny 29 109017 Moscow Russia.
d Institute for Geophysics and Geology University of Leipzig Talstrasse 35 04103 Leipzig Germany.
e Soil Department of Moscow State University, Vorobievy Gory 119899 Moscow Russia.
f Geology Department of Moscow State University, Vorobievy Gory 119899 Moscow Russia.
g Institute of Arctic and Alpine Research University of Colorado CB 450, Boulder Colorado 80309-0450 USA. |
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Abstract: | Pollen data from a Levinson-Lessing Lake sediment core (74°28'N, 98°38'E) and Cape Sabler, Taymyr Lake permafrost sequences (74°33'N, 100°32'E) reveal substantial environmental changes on the northern Taymyr Peninsula during the last c. 32 000 Formula: See Text]C years. The continuous records confirm that a scarce steppe-like vegetation with Poaceae, Artemisia and Cyperaceae dominated c. 32 000-10 300 Formula: See Text]C?yr BP, while tundra-like vegetation with Oxyria, Ranunculaceae and Caryophyllaceae grew in wetter areas. The coldest interval occurred c. 18 000?yr BP. Lateglacial pollen data show several warming events followed by a climate deterioration c. 10 500 Formula: See Text]C?yr BP, which may correspond with the Younger Dryas. The Late Pleistocene/Holocene transition, c. 10 300-10 000 Formula: See Text]C?yr BP, is characterized by a change from the herb-dominated vegetation to shrubby tundra with Betula sect. Nanae and Salix. Alnus fruticosa arrived locally c. 9000-8500 Formula: See Text]C?yr BP and disappeared c. 4000-3500 Formula: See Text]C?yr BP. Communities of Betula sect. Nanae, broadly distributed at c. 10 000-3500 Formula: See Text]C?yr BP, almost disappeared when vegetation became similar to the modern herb tundra after 3500-3000 Formula: See Text]C?yr BP. Quantitative climate reconstructions show Last Glacial Maximum summer temperature about 4°C below the present and Preboreal (c. 10 000 Formula: See Text]C?yr BP) temperature 2-4°C above the present. Maximum summer temperature occurred between 10 000 and 5500 Formula: See Text]C?yr BP; later summers were similar to present or slightly warmer. |
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